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## Index: Q

question mark (?)
  as built-in variable: 5.1.1. Exit Status and Return
  as regular expression operator: 4.5.2.1. Regular expression basics
    4.5.2.1. Regular expression basics
    4.5.2.3. Korn shell versus awk/egrep regular expressions
  as wildcard: 1.6.2. Filenames and Wildcards
    4.5.2.3. Korn shell versus awk/egrep regular expressions
  using with ERR fake signal: 9.1.2.2. ERR
QUIT signal: 8.3.1. Control-Key Signals
  8.3.2. kill
  8.3.2. kill
quote marks (" "): 1.9.1. Quoting
  1.9.1. Quoting
  1.9.3. Quoting Quotation Marks
  3.4.1. Variables and Quoting
  7.3.2. Substitution Order
  7.3.3. Quoting
  arithmetic expressions and: 6.2. Numeric Variables and Arithmetic
  secure shell scripts and: 10.4.1. Tips for Secure Shell Scripts
quoting: 1.9.1. Quoting
  7.3.3. Quoting
  character strings, rules for: 6.2. Numeric Variables and Arithmetic
  command substitution with double quotes: 4.6. Command Substitution
  extended: 7.3.3.1. Extended quoting
  variables and: 3.4.1. Variables and Quoting

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